The fact that Gintoki’s va its the same va with young Joseph Joestar and also make jojo parody its pure gold lmfaooo (also I forgor he voiced Karasuma sensei too sjdhskdbs)
To give additional information to those overseas, the child of Akira Toriyama, who is also known as the Emperor of Japanese Manga and the creator of Dragon Ball and Dr. Slump, is a big fan of Hideaki Sorachi, the creator of Gintama. Because of this, when Akira Toriyama's work was used in Gintama, he was worried that his child would dislike him if he protested to Sorachi, so he tacitly accepted it.